Europe vs Rock of Gibraltar

Europe and Rock of Gibraltar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Europe	Yes	No	No	No
Rock of Gibraltar	Yes	No	No	No

Europe (noun)	Rock of Gibraltar (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	location of a colony of the United Kingdom on a limestone promontory at the southern tip of Spain; strategically important because it can control the entrance of ships into the Mediterranean; one of the Pillars of Hercules
the nations of the European continent collectively
the 2nd smallest continent (actually a vast peninsula of Eurasia); the British use `Europe' to refer to all of the continent except the British Isles